Is there a tool similar to maya's "edit edge flow" in blender
Not exactly, but there are some tools which you can use to get similar results in specific situations.
Shrink/Fatten (Scale along normals)
Press AltS

Smooth subdivide
Change Smoothness in the redo panel (F6) after subdividing

Smooth loop cut
Change Smoothness in the redo panel after cutting, or set the smoothness while positioning the cut with AltMouse Wheel (the smooth value is displayed in the header).